Scraper



W. KUSZ May 21, 1946.

SGRAPER Filed Aug. 26, 1943 3 Sheets-Sheet 1 aq MLLIHM Kasi W. KUSZ May2l, 1946.

seaman Filed yAug. 2e, 194s s sheets-sheet 2 )VILL mM Kusz- May 2l,1946. w Kusz 2,400,760

scRAPER Filed'Aug. 26. 1943 3 sheets-sheet s' PatentedMayl 21,1946

UNITED srArEs PATENroFFlce aiooasc 'Y 'williamsrlam Appuaaan August 2s,194s, serial No. stoms Claims.

This invention relates to trailer scoops' or Scrapers, and moreparticularly to tractor drawn scrapers designed to dig, carry, dump andspread dirt, gravel and the like. y

One object of the present invention is to provide an exceedingly simple,inexpensive and eilicient trailer scraper or scoop capable of beingcontrolled by cables extending from a tractor or the like.

Another object of the present invention is to provide a scraper having aVrigid main frame and a pair of wheels mounted on a pair of supportingarms swingingly supported from the rigid trame, whereby the rigid framemay be ^`raised and lowered with respect to the wheels without tiltingabout the frame the scraper or any structures provide a scraper havingthe swingingly mounted bowl and apron disclosed hereinabove wherein thebowl is biased to carrying position, whereby a single cable may be usedpartially to open the apron into digging position without moving thebowl -from its load carrying position.

Another object of the present invention is to Aprovide a load carryingscraper as disclosed hereinabove and including an upright transverseyoke rigidly connected to the two swingingly mounted arms supporting thewheels, which yoke can support botl'ra cable for controlling the ggingposition of the scraper and the above men ioned cable controlling theposition of the bowl and apron.

Other and further objects and features of the present invention willbecome apparent from the following detailed description of an example ofa'scraper according to this invention shown the accompanying drawings,in which: i Figure 1 is a longitudinal cross-sectional view,

with parts shown in elevation, of a scraper ac cording to thisinvention, taken along line I-I of Figure 3;

yFigure2 is a fragmentary enlarged cross-sectional view through thebottom part of the scraper of Figure 1;

Figure 3 is a plan view of the scraper of Figure 1;

Figure 4 is a transverse cross-sectional view, with parts showninelevation, of the ,scraper of Figure 1, taken along the line IV-IV ofFigure l;

f Figure 5 is a side elevational view, with parts broken away, of thescraper in carrying position;

and y Figure 6 is a side elevational view of the scraper in dumpingposition.

As shown on the drawings:

A scraper according to the present invention is generally designated bythe reference numeral I0 in Figures 1 and 3 to 6. This scraper includesarigid frame formed by a transverse blade base II and a yoke I2 having atongue I3 extending forward for attachment to a tractor or the like (notshown). As best shown in Figure 2; the blade base I I may take the formof a fiat hollow beam having a, front wall IIa inclined at a suitable Yangle` to receive a scraper blade I4. The scraper blade I4 may beaiiixed to the inclined front Wall IIa of the blade base II by means ofa series of bolts I5 piercing spaced apertures I 6 through the bladebase and held in\ position bynuts Il disposed in lwells I8 formed intheunderside of thel blade base II in alignmentA with the apertures I6.Moldboards I9 may be provided at the ends of the scraper blade I4. f.

As shown in Figures 2 to 4, a rearwardly ex- ,tending rectangular plate2l is amxed to each end-of the blade base II. On its outside, each oneof these `plates 2| carries a-trunnion 22. each ofthese trunnions 22 ismounteda forwardly extending arm 23 spaced from the plate 2| andcarrying a trunnion 24 forsupporting a pair of wheels 25. Rigidlyconnected to the rear ends of the wheel arms 23 are the legs 26 of an Iupright yoke having a cross member 21. The

arms 23 are suitably connected tothe legs 26` by tie members 29. A cable28 `is anchored to the ward movement of the wheel arms 23.

As best shown in Figure 2, the blade baseV I I is formed with a groove30 extending lengthwise overthe top of the base for receiving a pivotshaft 3|. The pivot shaft 3l is conned within `the groove 30, whichfurther accommodatesa series of spaced hooks 32 rotatable about theshaft 3 I 'and havingl straight ends projecting outside the groove 30and attached to the bottom of a dirt carrying bowl 33, for permittingswinging movement of the -bowl- 33 about the pivot shaft 'The bowl `33is formed with a ilat lbottom 33a, a curved back wall 33h and two atside walls 33e, being open infront. A U-shaped frame member 34 attachedto the rear of the base blade II supports the bowl 33 in load carryingposi- 44, as shown in Figure 1. Such slight opening of the apron 44 canbe elected without moving the bowl 33, since the bowl 33 is urged by thespring 35 against the support 34. When, after tion.` -A spring 35vhaving one end attached to 5 the-apron and the bowl have been illledwith dirt,

an apertured lug 33d on the bottom of the bowl 33 and the other endattached to an eye IIb` on the rear wall oi.' the blade base II urgesthe bowl -33 against the frame 34.

From the rear end of each leg of the pulling yoke I2 there extends,inside the yoke 26, 21, an upright post 42 provided at its inside topwith a 'trunnion 43 on which the top rear partof an apron 44 isswingingly mounted behind the it is desired to haul` away the collecteddirt. the cable' 2B should rst be pulledto lift the scraper off theground. The cable 53 is then slackened, and the apron 44 will thenassume the bowl closing position shown in Figure 5 under the influenceof the weight .of the collected dirt. For dumping, the cable 53 ispulled suiliciently to raise rst the apron 44 and then the bowl 33 totilt the bottom surfaces of these two receptacles Scraper blade I4 so aStO-be urged by gravity l5 and to swing the rear edge of the apron awayagainst the scraper blade. More particularly, the apron 44 includes ailat bottom 44a, a rounded front wall 44h and iiat side walls 44c whichare recessed at their bottom corners at 44d to fit against the scraperblade I4 and the blade base 20 II. The apron 44 is open at its rear, andits side walls 44e can slide over the outsides of the bowl side walls33o. Upward movement of the apron 44 is limited by stop members 26a.

Tie lmembers 46 may suitably connect the to the yoke I2 and the uprightpost 42.

As shown in Figure 3, two sheaves 50 may be mounted side by side inupright position within a shielding box 50h attached to the top of theof the upright yoke and extends therefrom around one of the sheaves 50,then around one of the sheaves 52, then around the remaining sheave 50,then around another sheave 52, then around, one of the sheaves 5 I ,thenaround 'another sheave 52, then around another sheave 5I, and finallyaround the last sheave 52 forwardly to a winch 45- (not shown) on atractor.

In operating the scraper of the present invention, the distance of thescraper blade I4 from the ground is regulated by means of the cable 28.By pullin-g this cable, the yoke 26, 21 is moved in -a forward directionfor a distance 4limited by the stops I2a, and the wheel arms 23 aredepressed relative to the blade base II, so that the -scraper blade I4is lifted off the ground. Figures 5 and 6 show the scraper lifted offthe ground, indicated by the reference numeral 60. Releasing the tautcable 28' permits lowering of the scraper blade I4 into -diggingposition, as shown in Figure 1. Any intermediate qposition of thescraper blade can be eected by suitable 6o adjustment of the cable 28.As shown in Figures 1, 3,5 and', the length of the wheel arms 23 and theposition of the trunnion 24 onfthe wheel arms 23 is such that the wheels25 always are a short distance ahead ofthe scraper blade I4.- Thus thewheels 25 will always be supported by ground that 'has not beendisturbed by-the scraper blade I4 or by the dumping of collected dirt. f

When the scraper is in .digging position, the 70 from the scraper blade,as shown in Figure 6. \The apron 44 is rst swung against the stops 26a,and the bowl 33 is then tilted against the force of the spring 35.Slackening of the cable 53 will cause 'lrst the bowl 33 and then theapron 44 to assume their former positions.

legs 25 cable 53 is pulled suiliciently to open partially the apron 44,whereby 'the bottom lrear edge of the apron 44 is removed a substantialdistance 4from the scraper blade I4 to permit entry of scraped up' dirtinto the bowl 33 and the apron 76 It will thus be seen that I haveprovidedy a ,novel scraper'of improved construction capable ofconvenient and easy operation. Many details of construction may bevaried within a wide range without departing from the principles of tllsinvention, and it is therefore not my purpose to limit the patentgranted' on this invention otherwise than necessitated by the scope ofthe rear wall 33h of the bowl 33, and two sheaves 5I 30 appended claims.

I claim as my invention:

1. A trailer scraper including a rigid frame, a

transverse scraper blade mounted on said frame, forwardly extending armspivotally mounted on each side of said frame,l a wheel mounted on eachof said arms, a dirt receiving open ended bowl 'swingingly mounted onsaid frame behind said scraper blade, means biasing said bowl into dirtreceiving position, a bowl closing apron swingingly mounted from saidframe in front of said bowl, an erect transverse yoke rigidly connectedto said wheel arms, a cable anchored on said yoke for pulling the sameforward to depress said wheels with respect to said frame, and anothercable .anchored on said yoke operatively connected to said bowl and saidapron for tilting -sai'd bowl and said apron.

2. A trailer scraper including a rigid frame, a transverse scraper blademounted on said frame, forwardly extending arms pivotally mounted oneach side of said frame, a wheel mounted on each of said arms,adirtreceiving openended bowl swingingly mounted on said frame behindsaid scraper blade, means biasing said bowl into dirt receivingposition, a bowl closing apronswingingly mounted from said frame infront of said bowl, an erect transverse yoke rigidly connected to saidwheel arms, a cableanchored on said yoke for pulling the same forward todepress said wheels with respect to said frame, sheaves attached,respectively, to said bowl, to saidmapron and to sai yoke, and anothercable anchored on said yoke operating through said sheaves on said bowland said apron for tilting said bowl and said apron.

3. A trailer scraper including a, rigid frame comprising a transversebeam having an inclined front wall for supporting a scraper blade,rearwardly extending lerect plates attached to each end of said beamyand having trunnions on their outsides, and means extending rearwardlyfrom said beam for supporting a load receiving bowl, said scraperfurthery comprising forwardly extending arms pivotally mounted on eachof said trunnions, a wheel rotatably mounted at the free end of each `ofsaid arms, a pivot shaft extending lengthwise of said beam and attachedthereto, a dir t receiving open ended bowl swingingly mounted on saidpivot shaft behind saidscraper blade, spring means attached to said bowland to said beam for biasing said bowl into dirtl receiving position, ayoke rigidly connected to said beam and extending forwardly thereof forat-w tachment to a tractor, posts extending upwardly from each side ofsaid yoke behind said scraper blade, a bowl closing apron swinginglymounted on said posts in front of said bowl, an erect transverse yokerigidly connected rto, said wheel arms,

a cable anchored on said erect yoke for pulling the same forward todepress said wheels with respect to said frame, sheaves mounted, respecytively, on said erect yoke, on said apron and on said bowl, and anothercable anchored on said erect yoke operatively connected to said sheavesl for tilting said bowl and said apron.

4. A trailer scraper including a rigid frame, a transverse scraper bladesupported on said frame, a wheel carrying arm pivotally mounted on eachside of said frame, an open ended dirt receiving bowl having its frontedge pivotally mounted on said frame behind said scraper blade, a' bowlclosing apron, means extending upwardly from said rigid frame toswingingly support] said apron in 5. A trailerl scraper including arigid-frame,a

transverse scrapervbladesupported on said frame,

an arm pivotally mounted on each side of said frame and' extendingforwardly in front of said scraper blade, wheels carried by the frontends iof said arms, an open ended dirt receiving bowl having a frontedge pivotally mounted on said frame behind said scraper blade, a bowlclosing apron swingingly supported from said rigid frame in front f saidbowl; lever means rigidly connected to said arms for rswinging said armsto raise andlower said frame with respect to said wheels, a cableoperatively connected to said lever means for actuating the same, asheave supported from said lever means, and a cable run- 'ning throughsaid sheave operatively connected to said bowl and said apron fortilting of -said bowl andsaid apron.

WILLIAM KUSZ.

